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object.spec.ts
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304 lines (262 loc) · 9.05 KB
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import * as util from "../../util";
test.each([
{ initial: { a: 3 }, args: [{}] },
{ initial: {}, args: [{ a: 3 }] },
{ initial: { a: 3 }, args: [{ a: 5 }] },
{ initial: { a: 3 }, args: [{ b: 5 }, { c: 7 }] },
])("Object.assign (%p)", ({ initial, args }) => {
const argsString = util.formatCode(...args);
util.testExpression`Object.assign(${util.formatCode(initial)}, ${argsString})`.expectToMatchJsResult();
});
test.each([{}, { abc: 3 }, { abc: 3, def: "xyz" }])("Object.entries (%p)", obj => {
const testBuilder = util.testExpressionTemplate`Object.entries(${obj})`;
// Need custom matcher because order is not guaranteed in neither JS nor Lua
expect(testBuilder.getJsExecutionResult()).toEqual(expect.arrayContaining(testBuilder.getLuaExecutionResult()));
});
test.each([{}, { abc: 3 }, { abc: 3, def: "xyz" }])("Object.keys (%p)", obj => {
const testBuilder = util.testExpressionTemplate`Object.keys(${obj})`;
// Need custom matcher because order is not guaranteed in neither JS nor Lua
expect(testBuilder.getJsExecutionResult()).toEqual(expect.arrayContaining(testBuilder.getLuaExecutionResult()));
});
test.each([{}, { abc: "def" }, { abc: 3, def: "xyz" }])("Object.values (%p)", obj => {
const testBuilder = util.testExpressionTemplate`Object.values(${obj})`;
// Need custom matcher because order is not guaranteed in neither JS nor Lua
expect(testBuilder.getJsExecutionResult()).toEqual(expect.arrayContaining(testBuilder.getLuaExecutionResult()));
});
test.each(["[]", '[["a", 1], ["b", 2]]', '[["a", 1], ["a", 2]]', 'new Map([["foo", "bar"]])'])(
"Object.fromEntries(%s)",
entries => {
util.testExpression`Object.fromEntries(${entries})`.expectToMatchJsResult();
}
);
describe(".toString()", () => {
const toStringDeclaration = `
function toString(value: object) {
const result = value.toString();
return result === "[object Object]" || result.startsWith("table: ") ? "table" : result;
}
`;
test("class override", () => {
util.testFunction`
${toStringDeclaration}
class A {
public toString() {
return "A";
}
}
return toString(new A());
`.expectToMatchJsResult();
});
test("inherited class override", () => {
util.testFunction`
${toStringDeclaration}
class A {
public toString() {
return "A";
}
}
class B extends A {}
return { A: toString(new A()), B: toString(new B()) };
`.expectToMatchJsResult();
});
test("don't affect inherited class", () => {
util.testFunction`
${toStringDeclaration}
class A {}
class B extends A {
public toString() {
return "B";
}
}
return { A: toString(new A()), B: toString(new B()) };
`.expectToMatchJsResult();
});
test("override inherited class override", () => {
util.testFunction`
${toStringDeclaration}
class A {
public toString() {
return "A";
}
}
class B extends A {
public toString() {
return "B";
}
}
return { A: toString(new A()), B: toString(new B()) };
`.expectToMatchJsResult();
});
});
describe(".hasOwnProperty()", () => {
test("class field", () => {
util.testFunction`
class A {
public field = true;
}
return new A().hasOwnProperty("field");
`.expectToMatchJsResult();
});
test("class method", () => {
util.testFunction`
class A {
public method() {}
}
return new A().hasOwnProperty("method");
`.expectToMatchJsResult();
});
});
const trueFalseTests = [[true], [false]] as const;
describe("Object.defineProperty", () => {
test.each(trueFalseTests)("writable (%p)", value => {
util.testFunction`
const foo = { bar: true };
Object.defineProperty(foo, "bar", { writable: ${value} });
let error = false;
try {
foo.bar = false;
} catch {
error = true;
}
return { foobar: foo.bar, error };
`.expectToMatchJsResult();
});
test.each(trueFalseTests)("configurable (%p)", value => {
util.testFunction`
const foo = { bar: true };
Object.defineProperty(foo, "bar", { configurable: ${value} });
try { delete foo.bar } catch {};
return foo.bar;
`.expectToMatchJsResult();
});
test("defines a new property", () => {
util.testFunction`
const foo: any = {};
Object.defineProperty(foo, "bar", { value: true });
return foo.bar;
`.expectToMatchJsResult();
});
test("overwrites an existing property", () => {
util.testFunction`
const foo = { bar: false };
Object.defineProperty(foo, "bar", { value: true });
return foo.bar;
`.expectToMatchJsResult();
});
test("default descriptor", () => {
util.testFunction`
const foo = {};
Object.defineProperty(foo, "bar", {});
return Object.getOwnPropertyDescriptor(foo, "bar");
`.expectToMatchJsResult();
});
test.each([
["{ value: true, get: () => true }"],
["{ value: true, set: value => {} }"],
["{ writable: true, get: () => true }"],
])("invalid descriptor (%p)", props => {
util.testFunction`
const foo: any = {};
let err = false;
try {
Object.defineProperty(foo, "bar", ${props});
} catch {
err = true;
}
return { prop: foo.bar, err };
`.expectToMatchJsResult();
});
});
describe("Object.getOwnPropertyDescriptor", () => {
test("descriptor is exactly the same as the last one set", () => {
util.testFunction`
const foo = {};
Object.defineProperty(foo, "bar", {});
return Object.getOwnPropertyDescriptor(foo, "bar");
`.expectToMatchJsResult();
});
});
describe("Object.getOwnPropertyDescriptors", () => {
test("all descriptors match", () => {
util.testFunction`
const foo = { bar: true };
Object.defineProperty(foo, "bar", {});
return Object.getOwnPropertyDescriptors(foo);
`.expectToMatchJsResult();
});
});
describe("delete from object", () => {
test("delete from object", () => {
util.testFunction`
const obj = { foo: "bar", bar: "baz" };
return [delete obj["foo"], obj];
`.expectToMatchJsResult();
});
test("delete nonexistent property", () => {
util.testFunction`
const obj = {} as any
return [delete obj["foo"], obj];
`.expectToMatchJsResult();
});
// https://github.com/TypeScriptToLua/TypeScriptToLua/issues/993
test("delete from object with metatable", () => {
util.testFunction`
const obj = { foo: "bar", bar: "baz" };
setmetatable(obj, {});
return [delete obj["foo"], obj];
`
.setTsHeader("declare function setmetatable<T extends object>(this: void, table: T, metatable: any): T;")
.expectToEqual([true, { bar: "baz" }]);
});
test("delete nonconfigurable own property", () => {
util.testFunction`
const obj = {} as any
Object.defineProperty(obj, "foo", {
configurable: false,
value: true
})
try {
delete obj["foo"]
return "deleted"
} catch (e) {
return e instanceof TypeError
}
`
.setOptions({
strict: true,
})
.expectToMatchJsResult();
});
});
describe("Object.groupBy", () => {
test("empty", () => {
util.testFunction`
const array = [];
return Object.groupBy(array, (num, index) => {
return num % 2 === 0 ? "even": "odd";
});
`.expectToEqual([]);
});
test("groupBy", () => {
util.testFunction`
const array = [0, 1, 2, 3, 4, 5];
return Object.groupBy(array, (num, index) => {
return num % 2 === 0 ? "even": "odd";
});
`.expectToEqual({
even: [0, 2, 4],
odd: [1, 3, 5],
});
});
test("groupBy index", () => {
util.testFunction`
const array = [0, 1, 2, 3, 4, 5];
return Object.groupBy(array, (num, index) => {
return index < 3 ? "low": "high";
});
`.expectToEqual({
low: [0, 1, 2],
high: [3, 4, 5],
});
});
});